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Functional Composite Materials
Fig. 2 | Functional Composite Materials

Fig. 2

From: Impact of solar radiation on chemical structure and micromechanical properties of cellulose-based humidity-sensing material Cottonid

Fig. 2

a Test setup for actuation experiments in alternating climate chamber (MKF 115, Binder, Tuttlingen, Germany); b Cottonid specimen with speckled surface for strain measurements via digital image correlation (DIC) mounted in customized specimen holder; c Strain measurements on specimen’s surface via DIC parallel (ε’Tan,x) and perpendicular (ε’Tan,y) to manufacturing direction

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